I have been using a skincare range for the past 4 years. It is one that goes up in gradients for Vitamin A. It has been quite good. I have always taken care of my skin from an early age, using different products. I used to have quite sensitive skin, but I think this has improved with age.
I just replaced a couple of the items I use and it came to over £200!!!! 
Now the skincare is good, but it hasn't significantly changed my life or made me look loads younger. It has done an alright job.
I'm in 2 minds whether or not to jump ship when I have used this up. If I calculate what I will be spending (goes up as the levels of Vit A increase) I think it will be about £700 a year.
I think I have good skin, and I think it has made a bit of difference, but I don't think £700 difference.